1. A maudlin ballad.
2. A choral work.
3. A lovely little music-hall ditty.
4. A whistling noise.
5. A houseful of barking dogs and screaming children.
6. The Song of Hiawatha.
7. Inaudible pulses of high-frequency sound.
8. Taxi drivers honking their horns.
9. Mozart’s symphonies in arrangements for cello and piano.
10. Four-part harmony in the barbershop style
11. A moment of silence presided over by a local minister.
12. The sound of the Beatles.